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Finding the Fourth Proportional to 123,957.42, 171,060.30 and 67,369.20

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Solution

The fourth proportional to 123,957.42, 171,060.30 and 67,369.20 is: 92,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,957.42 : 171,060.30 = 67,369.20 : x
  2. Step 2: Convert to fraction form
    123,957.42/171,060.30 = 67,369.20/x
  3. Step 3: Cross multiply
    123,957.42x = 171,060.30 × 67,369.20
  4. Step 4: Simplify right side
    123,957.42x = 11,524,195,562.76
  5. Step 5: Solve for x
    x = 11,524,195,562.76/123,957.42
  6. Step 6: Final answer
    x = 92,968.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.